O.E.M Fastening Systems - UNF Inserts - Screw Lock
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UNF Inserts - Screw Lock

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The Heli-Coil® Screw-Lock Insert provides an exclusive, resilient internal locking thread that grips the bolt and prevents it from loosening under vibration or impact.

Locking action is achieved by one or more of the coils of the Insert having a series of straight segments, or chords. When the bolt enters this grip coil these chordal segments flex outward creating pressure on the bolt. This pressure is exerted between the flanks of the bolt thread thus utilizing the maximum contact area and minimizing the unit pressure.

Heli-Coil® Screw-Lock Inserts permit repeated assembly and disassembly, yet will not relax their grip on the screw even in tough metals such as cast iron, alloy steel, titanium, etc.

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Screw Lock

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Item #

Item Name

Material

Minor Dia Min

Minor Dia Max

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Military

Thread

Length (L)

Drill Depth

3591-03CN099 UNF Inserts - Screw Lock Stainless Steel 0.1029 in. 0.1086 in. 0.1247 in. 21209-F0310 3-56 0.099 in. 0.256 in.
3591-03CN099S UNF Inserts - Screw Lock Stainless Steel 0.1029 in. 0.1086 in. 0.1247 in. 21209-F0310 3-56 0.099 in. 0.256 in.
3591-03CN148 UNF Inserts - Screw Lock Stainless Steel 0.1029 in. 0.1086 in. 0.1247 in. 21209-F0315 3-56 0.148 in. 0.305 in.
3591-03CN148S UNF Inserts - Screw Lock Stainless Steel 0.1029 in. 0.1086 in. 0.1247 in. 21209-F0315 3-56 0.148 in. 0.305 in.
3591-03CN198 UNF Inserts - Screw Lock Stainless Steel 0.1029 in. 0.1086 in. 0.1247 in. 21209-F0320 3-56 0.198 in. 0.355 in.
3591-03CN198S UNF Inserts - Screw Lock Stainless Steel 0.1029 in. 0.1086 in. 0.1247 in. 21209-F0320 3-56 0.198 in. 0.355 in.
3591-03EN099 UNF Inserts - Screw Lock Heli-Tronic 0.1029 in. 0.1086 in. 0.1247 in. 21209-F0310 3-56 0.099 in. 0.256 in.
3591-03EN099S UNF Inserts - Screw Lock Heli-Tronic 0.1029 in. 0.1086 in. 0.1247 in. 21209-F0310 3-56 0.099 in. 0.256 in.
3591-03EN148 UNF Inserts - Screw Lock Heli-Tronic 0.1029 in. 0.1086 in. 0.1247 in. 21209-F0315 3-56 0.148 in. 0.305 in.
3591-03EN148S UNF Inserts - Screw Lock Heli-Tronic 0.1029 in. 0.1086 in. 0.1247 in. 21209-F0315 3-56 0.148 in. 0.305 in.
3591-03EN198 UNF Inserts - Screw Lock Heli-Tronic 0.1029 in. 0.1086 in. 0.1247 in. 21209-F0320 3-56 0.198 in. 0.355 in.
3591-03EN198S UNF Inserts - Screw Lock Heli-Tronic 0.1029 in. 0.1086 in. 0.1247 in. 21209-F0320 3-56 0.198 in. 0.355 in.
3591-03TN148 UNF Inserts - Screw Lock Inconel X 0.1029 in. 0.1086 in. 0.1247 in. 21209-F0315 3-56 0.148 in. 0.305 in.
3591-03TN148S UNF Inserts - Screw Lock Inconel X 0.1029 in. 0.1086 in. 0.1247 in. 21209-F0315 3-56 0.148 in. 0.305 in.
3591-03TN198 UNF Inserts - Screw Lock Inconel X 0.1029 in. 0.1086 in. 0.1247 in. 21209-F0320 3-56 0.198 in. 0.355 in.
3591-03TN198S UNF Inserts - Screw Lock Inconel X 0.1029 in. 0.1086 in. 0.1247 in. 21209-F0320 3-56 0.198 in. 0.355 in.
3591-04CN112 UNF Inserts - Screw Lock Stainless Steel 0.1166 in. 0.1229 in. 0.1419 in. 21209-F0410 4-48 0.112 in. 0.293 in.
3591-04CN112S UNF Inserts - Screw Lock Stainless Steel 0.1166 in. 0.1229 in. 0.1419 in. 21209-F0410 4-48 0.112 in. 0.293 in.
3591-04CN168 UNF Inserts - Screw Lock Stainless Steel 0.1166 in. 0.1229 in. 0.1419 in. 21209-F0415 4-48 0.168 in. 0.349 in.
3591-04CN168S UNF Inserts - Screw Lock Stainless Steel 0.1166 in. 0.1229 in. 0.1419 in. 21209-F0415 4-48 0.168 in. 0.349 in.
3591-04CN224 UNF Inserts - Screw Lock Stainless Steel 0.1166 in. 0.1229 in. 0.1419 in. 21209-F0420 4-48 0.224 in. 0.405 in.
3591-04CN224S UNF Inserts - Screw Lock Stainless Steel 0.1166 in. 0.1229 in. 0.1419 in. 21209-F0420 4-48 0.224 in. 0.405 in.
3591-04EN112 UNF Inserts - Screw Lock Heli-Tronic 0.1166 in. 0.1229 in. 0.1419 in. 21209-F0410 4-48 0.112 in. 0.293 in.
3591-04EN112S UNF Inserts - Screw Lock Heli-Tronic 0.1166 in. 0.1229 in. 0.1419 in. 21209-F0410 4-48 0.112 in. 0.293 in.
3591-04EN168 UNF Inserts - Screw Lock Heli-Tronic 0.1166 in. 0.1229 in. 0.1419 in. 21209-F0415 4-48 0.168 in. 0.349 in.
  Results 1 - 25 of 188 1 2 3 4 5 »  
O.E.M. Fastening Systems - 5155 Sugarloaf Parkway, Ste E - Lawrenceville, GA 30043 - Phone: (770) 448-1771 - Fax: (770) 448-3813 - Toll Free: 800-928-7439